<!DOCTYPE HTML>
<html>

<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>函数传参</title>
  <script type="text/JavaScript">
    function  add3()               
	{
	  sum = x + y +z;
	  document.write(x+"、"+y+"、"+z+"和:"+sum+"<br/>");
	}
	 add3(5,8,3)
	 add3(7,1,4)
</script>
</head>

<body>
</body>

</html>